Poor Service and Damaged Goods on a Brand new car

I bought a Brand New Renault Duster from the Tygervalley Branch in late January 2015. I picked up a few issues on 28/02/2015 with the car being the NAV system not working correctly with Bluetooth and car dying on me a couple of times. On 23/03/2015: I noticed a rusted part in my bonnet that was completely rusted and I raised my concerns with Allistair and Charlene at Renault tygervalley. Allistair eventually sent me a whattsup on 27/03/2015 saying his tablet was broken and he would come and have a look at it the following Monday. Allistair never bothered to come. On 08,10,13,14 April 2015 i sent messages and no replies from him.He then eventualy rep**** to me on 28/04/2015 to tell me i need to take the car to the workshop in stikland. Why only tell me this now. Early May 2015 I decided to take the car to the workshop. They fixed the lining and a week later it was lose. They sent a picture of the rusted part for approval and said it would take 5 working days and 2 months later I am still waiting. I have a more detailed report on this which i am happy to forward. Renaults after sales service is shocking.